arch/sparc/Kconfig

   1 config 64BIT
   2         bool "64-bit kernel" if ARCH = "sparc"
   3         default ARCH = "sparc64"
   4         help
   5           SPARC is a family of RISC microprocessors designed and marketed by
   6           Sun Microsystems, incorporated.  They are very widely found in Sun
   7           workstations and clones.
   8
   9           Say yes to build a 64-bit kernel - formerly known as sparc64
  10           Say no to build a 32-bit kernel - formerly known as sparc
  11
  12 config SPARC
  13         bool
  14         default y
  15         select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
  16         select ARCH_MIGHT_HAVE_PC_SERIO
  17         select OF
  18         select OF_PROMTREE
  19         select HAVE_IDE
  20         select HAVE_OPROFILE
  21         select HAVE_ARCH_KGDB if !SMP || SPARC64
  22         select HAVE_ARCH_TRACEHOOK
  23         select SYSCTL_EXCEPTION_TRACE
  24         select ARCH_WANT_OPTIONAL_GPIOLIB
  25         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
  26         select RTC_CLASS
  27         select RTC_DRV_M48T59
  28         select HAVE_DMA_ATTRS
  29         select HAVE_DMA_API_DEBUG
  30         select HAVE_ARCH_JUMP_LABEL
  31         select GENERIC_IRQ_SHOW
  32         select ARCH_WANT_IPC_PARSE_VERSION
  33         select GENERIC_PCI_IOMAP
  34         select HAVE_NMI_WATCHDOG if SPARC64
  35         select HAVE_BPF_JIT
  36         select HAVE_DEBUG_BUGVERBOSE
  37         select GENERIC_SMP_IDLE_THREAD
  38         select GENERIC_CMOS_UPDATE
  39         select GENERIC_CLOCKEVENTS
  40         select GENERIC_STRNCPY_FROM_USER
  41         select GENERIC_STRNLEN_USER
  42         select MODULES_USE_ELF_RELA
  43         select ODD_RT_SIGACTION
  44         select OLD_SIGSUSPEND
  45
  46 config SPARC32
  47         def_bool !64BIT
  48         select GENERIC_ATOMIC64
  49         select CLZ_TAB
  50         select HAVE_UID16
  51         select OLD_SIGACTION
  52
  53 config SPARC64
  54         def_bool 64BIT
  55         select HAVE_FUNCTION_TRACER
  56         select HAVE_FUNCTION_GRAPH_TRACER
  57         select HAVE_FUNCTION_GRAPH_FP_TEST
  58         select HAVE_FUNCTION_TRACE_MCOUNT_TEST
  59         select HAVE_KRETPROBES
  60         select HAVE_KPROBES
  61         select HAVE_RCU_TABLE_FREE if SMP
  62         select HAVE_MEMBLOCK
  63         select HAVE_MEMBLOCK_NODE_MAP
  64         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  65         select HAVE_DYNAMIC_FTRACE
  66         select HAVE_FTRACE_MCOUNT_RECORD
  67         select HAVE_SYSCALL_TRACEPOINTS
  68         select HAVE_CONTEXT_TRACKING
  69         select HAVE_DEBUG_KMEMLEAK
  70         select RTC_DRV_CMOS
  71         select RTC_DRV_BQ4802
  72         select RTC_DRV_SUN4V
  73         select RTC_DRV_STARFIRE
  74         select HAVE_PERF_EVENTS
  75         select PERF_USE_VMALLOC
  76         select IRQ_PREFLOW_FASTEOI
  77         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  78         select HAVE_C_RECORDMCOUNT
  79         select NO_BOOTMEM
  80
  81 config ARCH_DEFCONFIG
  82         string
  83         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
  84         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
  85
  86 config IOMMU_HELPER
  87         bool
  88         default y if SPARC64
  89
  90 config STACKTRACE_SUPPORT
  91         bool
  92         default y if SPARC64
  93
  94 config LOCKDEP_SUPPORT
  95         bool
  96         default y if SPARC64
  97
  98 config HAVE_LATENCYTOP_SUPPORT
  99         bool
 100         default y if SPARC64
 101
 102 config ARCH_HIBERNATION_POSSIBLE
 103         def_bool y if SPARC64
 104
 105 config AUDIT_ARCH
 106         bool
 107         default y
 108
 109 config HAVE_SETUP_PER_CPU_AREA
 110         def_bool y if SPARC64
 111
 112 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 113         def_bool y if SPARC64
 114
 115 config NEED_PER_CPU_PAGE_FIRST_CHUNK
 116         def_bool y if SPARC64
 117
 118 config MMU
 119         bool
 120         default y
 121
 122 config HIGHMEM
 123         bool
 124         default y if SPARC32
 125
 126 config ZONE_DMA
 127         bool
 128         default y if SPARC32
 129
 130 config NEED_DMA_MAP_STATE
 131         def_bool y
 132
 133 config NEED_SG_DMA_LENGTH
 134         def_bool y
 135
 136 config GENERIC_ISA_DMA
 137         bool
 138         default y if SPARC32
 139
 140 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 141         def_bool y if SPARC64
 142
 143 source "init/Kconfig"
 144
 145 source "kernel/Kconfig.freezer"
 146
 147 menu "Processor type and features"
 148
 149 config SMP
 150         bool "Symmetric multi-processing support"
 151         ---help---
 152           This enables support for systems with more than one CPU. If you have
 153           a system with only one CPU, say N. If you have a system with more
 154           than one CPU, say Y.
 155
 156           If you say N here, the kernel will run on uni- and multiprocessor
 157           machines, but will use only one CPU of a multiprocessor machine. If
 158           you say Y here, the kernel will run on many, but not all,
 159           uniprocessor machines. On a uniprocessor machine, the kernel
 160           will run faster if you say N here.
 161
 162           People using multiprocessor machines who say Y here should also say
 163           Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
 164           Management" code will be disabled if you say Y here.
 165
 166           See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
 167           available at <http://www.tldp.org/docs.html#howto>.
 168
 169           If you don't know what to do here, say N.
 170
 171 config NR_CPUS
 172         int "Maximum number of CPUs"
 173         depends on SMP
 174         range 2 32 if SPARC32
 175         range 2 1024 if SPARC64
 176         default 32 if SPARC32
 177         default 64 if SPARC64
 178
 179 source kernel/Kconfig.hz
 180
 181 config RWSEM_GENERIC_SPINLOCK
 182         bool
 183         default y if SPARC32
 184
 185 config RWSEM_XCHGADD_ALGORITHM
 186         bool
 187         default y if SPARC64
 188
 189 config GENERIC_HWEIGHT
 190         bool
 191         default y
 192
 193 config GENERIC_CALIBRATE_DELAY
 194         bool
 195         default y
 196
 197 config ARCH_MAY_HAVE_PC_FDC
 198         bool
 199         default y
 200
 201 config EMULATED_CMPXCHG
 202         bool
 203         default y if SPARC32
 204         help
 205           Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
 206           is emulated, and therefore it is not completely atomic.
 207
 208 # Makefile helpers
 209 config SPARC32_SMP
 210         bool
 211         default y
 212         depends on SPARC32 && SMP
 213
 214 config SPARC64_SMP
 215         bool
 216         default y
 217         depends on SPARC64 && SMP
 218
 219 config EARLYFB
 220         bool "Support for early boot text console"
 221         default y
 222         depends on SPARC64
 223         help
 224           Say Y here to enable a faster early framebuffer boot console.
 225
 226 config SECCOMP
 227         bool "Enable seccomp to safely compute untrusted bytecode"
 228         depends on SPARC64 && PROC_FS
 229         default y
 230         help
 231           This kernel feature is useful for number crunching applications
 232           that may need to compute untrusted bytecode during their
 233           execution. By using pipes or other transports made available to
 234           the process as file descriptors supporting the read/write
 235           syscalls, it's possible to isolate those applications in
 236           their own address space using seccomp. Once seccomp is
 237           enabled via /proc/<pid>/seccomp, it cannot be disabled
 238           and the task is only allowed to execute a few safe syscalls
 239           defined by each seccomp mode.
 240
 241           If unsure, say Y. Only embedded should say N here.
 242
 243 config HOTPLUG_CPU
 244         bool "Support for hot-pluggable CPUs"
 245         depends on SPARC64 && SMP
 246         help
 247           Say Y here to experiment with turning CPUs off and on.  CPUs
 248           can be controlled through /sys/devices/system/cpu/cpu#.
 249           Say N if you want to disable CPU hotplug.
 250
 251 if SPARC64
 252 source "drivers/cpufreq/Kconfig"
 253 endif
 254
 255 config US3_MC
 256         tristate "UltraSPARC-III Memory Controller driver"
 257         depends on SPARC64
 258         default y
 259         help
 260           This adds a driver for the UltraSPARC-III memory controller.
 261           Loading this driver allows exact mnemonic strings to be
 262           printed in the event of a memory error, so that the faulty DIMM
 263           on the motherboard can be matched to the error.
 264
 265           If in doubt, say Y, as this information can be very useful.
 266
 267 # Global things across all Sun machines.
 268 config GENERIC_LOCKBREAK
 269         bool
 270         default y
 271         depends on SPARC64 && SMP && PREEMPT
 272
 273 config NUMA
 274         bool "NUMA support"
 275         depends on SPARC64 && SMP
 276
 277 config NODES_SHIFT
 278         int
 279         default "4"
 280         depends on NEED_MULTIPLE_NODES
 281
 282 # Some NUMA nodes have memory ranges that span
 283 # other nodes.  Even though a pfn is valid and
 284 # between a node's start and end pfns, it may not
 285 # reside on that node.  See memmap_init_zone()
 286 # for details.
 287 config NODES_SPAN_OTHER_NODES
 288         def_bool y
 289         depends on NEED_MULTIPLE_NODES
 290
 291 config ARCH_SELECT_MEMORY_MODEL
 292         def_bool y if SPARC64
 293
 294 config ARCH_SPARSEMEM_ENABLE
 295         def_bool y if SPARC64
 296         select SPARSEMEM_VMEMMAP_ENABLE
 297
 298 config ARCH_SPARSEMEM_DEFAULT
 299         def_bool y if SPARC64
 300
 301 source "mm/Kconfig"
 302
 303 if SPARC64
 304 source "kernel/power/Kconfig"
 305 endif
 306
 307 config SCHED_SMT
 308         bool "SMT (Hyperthreading) scheduler support"
 309         depends on SPARC64 && SMP
 310         default y
 311         help
 312           SMT scheduler support improves the CPU scheduler's decision making
 313           when dealing with SPARC cpus at a cost of slightly increased overhead
 314           in some places. If unsure say N here.
 315
 316 config SCHED_MC
 317         bool "Multi-core scheduler support"
 318         depends on SPARC64 && SMP
 319         default y
 320         help
 321           Multi-core scheduler support improves the CPU scheduler's decision
 322           making when dealing with multi-core CPU chips at a cost of slightly
 323           increased overhead in some places. If unsure say N here.
 324
 325 source "kernel/Kconfig.preempt"
 326
 327 config CMDLINE_BOOL
 328         bool "Default bootloader kernel arguments"
 329         depends on SPARC64
 330
 331 config CMDLINE
 332         string "Initial kernel command string"
 333         depends on CMDLINE_BOOL
 334         default "console=ttyS0,9600 root=/dev/sda1"
 335         help
 336           Say Y here if you want to be able to pass default arguments to
 337           the kernel. This will be overridden by the bootloader, if you
 338           use one (such as SILO). This is most useful if you want to boot
 339           a kernel from TFTP, and want default options to be available
 340           with having them passed on the command line.
 341
 342           NOTE: This option WILL override the PROM bootargs setting!
 343
 344 config SUN_PM
 345         bool
 346         default y if SPARC32
 347         help
 348           Enable power management and CPU standby features on supported
 349           SPARC platforms.
 350
 351 config SPARC_LED
 352         tristate "Sun4m LED driver"
 353         depends on SPARC32
 354         help
 355           This driver toggles the front-panel LED on sun4m systems
 356           in a user-specifiable manner.  Its state can be probed
 357           by reading /proc/led and its blinking mode can be changed
 358           via writes to /proc/led
 359
 360 config SERIAL_CONSOLE
 361         bool
 362         depends on SPARC32
 363         default y
 364         ---help---
 365           If you say Y here, it will be possible to use a serial port as the
 366           system console (the system console is the device which receives all
 367           kernel messages and warnings and which allows logins in single user
 368           mode). This could be useful if some terminal or printer is connected
 369           to that serial port.
 370
 371           Even if you say Y here, the currently visible virtual console
 372           (/dev/tty0) will still be used as the system console by default, but
 373           you can alter that using a kernel command line option such as
 374           "console=ttyS1". (Try "man bootparam" or see the documentation of
 375           your boot loader (silo) about how to pass options to the kernel at
 376           boot time.)
 377
 378           If you don't have a graphics card installed and you say Y here, the
 379           kernel will automatically use the first serial line, /dev/ttyS0, as
 380           system console.
 381
 382           If unsure, say N.
 383
 384 config SPARC_LEON
 385         bool "Sparc Leon processor family"
 386         depends on SPARC32
 387         select USB_EHCI_BIG_ENDIAN_MMIO
 388         select USB_EHCI_BIG_ENDIAN_DESC
 389         ---help---
 390           If you say Y here if you are running on a SPARC-LEON processor.
 391           The LEON processor is a synthesizable VHDL model of the
 392           SPARC-v8 standard. LEON is  part of the GRLIB collection of
 393           IP cores that are distributed under GPL. GRLIB can be downloaded
 394           from www.gaisler.com. You can download a sparc-linux cross-compilation
 395           toolchain at www.gaisler.com.
 396
 397 if SPARC_LEON
 398 menu "U-Boot options"
 399
 400 config UBOOT_LOAD_ADDR
 401         hex "uImage Load Address"
 402         default 0x40004000
 403         ---help---
 404          U-Boot kernel load address, the address in physical address space
 405          where u-boot will place the Linux kernel before booting it.
 406          This address is normally the base address of main memory + 0x4000.
 407
 408 config UBOOT_FLASH_ADDR
 409         hex "uImage.o Load Address"
 410         default 0x00080000
 411         ---help---
 412          Optional setting only affecting the uImage.o ELF-image used to
 413          download the uImage file to the target using a ELF-loader other than
 414          U-Boot. It may for example be used to download an uImage to FLASH with
 415          the GRMON utility before even starting u-boot.
 416
 417 config UBOOT_ENTRY_ADDR
 418         hex "uImage Entry Address"
 419         default 0xf0004000
 420         ---help---
 421          Do not change this unless you know what you're doing. This is
 422          hardcoded by the SPARC32 and LEON port.
 423
 424          This is the virtual address u-boot jumps to when booting the Linux
 425          Kernel.
 426
 427 endmenu
 428 endif
 429
 430 endmenu
 431
 432 menu "Bus options (PCI etc.)"
 433 config SBUS
 434         bool
 435         default y
 436
 437 config SBUSCHAR
 438         bool
 439         default y
 440
 441 config SUN_LDOMS
 442         bool "Sun Logical Domains support"
 443         depends on SPARC64
 444         help
 445           Say Y here is you want to support virtual devices via
 446           Logical Domains.
 447
 448 config PCI
 449         bool "Support for PCI and PS/2 keyboard/mouse"
 450         help
 451           Find out whether your system includes a PCI bus. PCI is the name of
 452           a bus system, i.e. the way the CPU talks to the other stuff inside
 453           your box.  If you say Y here, the kernel will include drivers and
 454           infrastructure code to support PCI bus devices.
 455
 456           CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
 457           CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
 458           All of these platforms are extremely obscure, so say N if unsure.
 459
 460 config PCI_DOMAINS
 461         def_bool PCI if SPARC64
 462
 463 config PCI_SYSCALL
 464         def_bool PCI
 465
 466 config PCIC_PCI
 467         bool
 468         depends on PCI && SPARC32 && !SPARC_LEON
 469         default y
 470
 471 config LEON_PCI
 472         bool
 473         depends on PCI && SPARC_LEON
 474         default y
 475
 476 config SPARC_GRPCI1
 477         bool "GRPCI Host Bridge Support"
 478         depends on LEON_PCI
 479         default y
 480         help
 481           Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
 482           PCI host controller is typically found in GRLIB SPARC32/LEON
 483           systems. The driver has one property (all_pci_errors) controlled
 484           from the bootloader that makes the GRPCI to generate interrupts
 485           on detected PCI Parity and System errors.
 486
 487 config SPARC_GRPCI2
 488         bool "GRPCI2 Host Bridge Support"
 489         depends on LEON_PCI
 490         default y
 491         help
 492           Say Y here to include the GRPCI2 Host Bridge Driver.
 493
 494 source "drivers/pci/Kconfig"
 495
 496 source "drivers/pcmcia/Kconfig"
 497
 498 config SUN_OPENPROMFS
 499         tristate "Openprom tree appears in /proc/openprom"
 500         help
 501           If you say Y, the OpenPROM device tree will be available as a
 502           virtual file system, which you can mount to /proc/openprom by "mount
 503           -t openpromfs none /proc/openprom".
 504
 505           To compile the /proc/openprom support as a module, choose M here: the
 506           module will be called openpromfs.
 507
 508           Only choose N if you know in advance that you will not need to modify
 509           OpenPROM settings on the running system.
 510
 511 # Makefile helpers
 512 config SPARC64_PCI
 513         bool
 514         default y
 515         depends on SPARC64 && PCI
 516
 517 config SPARC64_PCI_MSI
 518         bool
 519         default y
 520         depends on SPARC64_PCI && PCI_MSI
 521
 522 endmenu
 523
 524 menu "Executable file formats"
 525
 526 source "fs/Kconfig.binfmt"
 527
 528 config COMPAT
 529         bool
 530         depends on SPARC64
 531         default y
 532         select COMPAT_BINFMT_ELF
 533         select HAVE_UID16
 534         select ARCH_WANT_OLD_COMPAT_IPC
 535         select COMPAT_OLD_SIGACTION
 536
 537 config SYSVIPC_COMPAT
 538         bool
 539         depends on COMPAT && SYSVIPC
 540         default y
 541
 542 config KEYS_COMPAT
 543         def_bool y if COMPAT && KEYS
 544
 545 endmenu
 546
 547 source "net/Kconfig"
 548
 549 source "drivers/Kconfig"
 550
 551 source "drivers/sbus/char/Kconfig"
 552
 553 source "fs/Kconfig"
 554
 555 source "arch/sparc/Kconfig.debug"
 556
 557 source "security/Kconfig"
 558
 559 source "crypto/Kconfig"
 560
 561 source "lib/Kconfig"